CVE-2026-45784
highpriority · track · 28EPSS 0.001 · 3 %ileEURUUSEPSS · scored 2026-10-27
rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.10.50 until 0.10.80, CipherCtxRef::cipher_update_inplace in openssl/src/cipher_ctx.rs incorrectly sized output buffers when used with AES key-wrap-with-padding ciphers EVP_aes_{128,192,256}_wrap_pad. For a non-multiple-of-8 input, OpenSSL writes up to 7 bytes past the end of the caller's buffer or Vec, producing attacker-controllable heap corruption when the plaintext length is attacker-influenced. This issue is fixed in version 0.10.80.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 1.2–7.1
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (7)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- GHSA-phqj-4mhp-q6mqrust-openssl: Potential out-of-bounds write in `CipherCtxRef::cipher_update_inplace` for AES-KW-PAD ciphers2026-05-19ghsa · osvUS
`CipherCtxRef::cipher_update_inplace` incorrectly sized output buffers when used with AES key-wrap-with-padding ciphers (EVP_aes_{128,192,256}_wrap_pad). For a non-multiple-of-8 input, OpenSSL writes up to 7 bytes past the end of the caller's buffer or Vec, producing attacker-controllable heap corruption when the plaintext length is attacker-influenced. This only impacts users using AES key-wrap-with-padding ciphers. This method was missed in the fix for GHSA-xv59-967r-8726
also known as (5)
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sources
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references (12)
External citations — patches, advisories, analysis.
- https://github.com/rust-openssl/rust-openssl/commit/19eceb26f2404aae187e5444e65c404ebc1348a7cnnvd
- https://github.com/rust-openssl/rust-openssl/pull/2638cnnvd
- https://github.com/rust-openssl/rust-openssl/releases/tag/openssl-v0.10.80cnnvd
- https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-phqj-4mhp-q6mqcnnvd
- https://github.com/rust-openssl/rust-openssl/commit/19eceb26f2404aae187e5444e65c404ebc1348a7enisa_euvd
- https://github.com/rust-openssl/rust-openssl/pull/2638enisa_euvd
- https://github.com/rust-openssl/rust-openssl/releases/tag/openssl-v0.10.80enisa_euvd
- https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-phqj-4mhp-q6mqenisa_euvd
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